package com.example.spring.bean;
// set注入之注入特殊符号 > < " ' &
public class MathBean {
    private String res;

    public void setRes(String res) {
        this.res = res;
    }

    @Override
    public String toString() {
        return "MathBean{" +
                "res='" + res + '\'' +
                '}';
    }
}
